Sheet-glass-cutting machine.



A. P. WHITTEMORE. SHEET GLASS CUTTING MACHINE. APPLICATION FILED MAR.25,1913 1,1 17,736. Patented NW. 1?,

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\E'HITTE-MORE, 0F WEBSTER GROVE$, I'ITISSOURI.

SHlET-GLASS-CUTTING MACHINE.

Application filed March 25,

To all whom-it mag cancern1:

Be it known that l, ALLA l. YK' IiXlClII-I- noun, a. citizen of the United lrltates, resuimg at Webster Groves, h'lissouri, have invented a certain new and useful .lrnprm en ent 1n Sheet'Glass-Cutting Machines, of which the followin is a fulhlzlezrr, and exact descr1p-' tion, s uci as will enable others SlUllQd in the art to which it appertains to make and use the same.

This .,l fention relates to machines tor cutting sheets of glass.

One object of my invention 1s to prov de a sheetglass cutting machine in -\\'ll1C-li the cutting or scoring tool is mounted on a carriage thatalways travels in the same path across the work-table, and the gage, against which one, edge of the glass-1s held while it i s being out, is adlustable toward and away from the path'ot travel of the carriage. Another object is to provide a glass cutting machine iii which the work-table equipped. with-a' movable member, under control of thcoperator, that is adapted to be moved upwardly after the glass has been scored or scratched so asto break the g'l s5 at the point, where the top surface of the glass is scored, said movable member being preferably located in longitudinal ahnement with 'the'path of travel of the scoring tool on th euzarriage.

Other objects and desirable features of my invention will be hereinafter pointed out.

Figure l of the drawings is an end ele vational view of a sheet glass cutting machine constructed in accordance with my invention, the work-table being hroiien away so as to show the location of the movable member that is used for breaking the glass at the pointv'liere it is scored: and Fig. 2 is a. vertical sectional view taken on approximately the line 2 B of Fig l.

Referring to the drawings which illustrate the preferred form of my invention, A designates the worlctable of the n'iacnine, and B designates a carriage that is slidingly mounted on a pair of guide rods 1 that are supported by end plates 2 on the work-tabl the carriage B being provided with :2 tool C of any suitable type for scoring or scratch ing theitop surface of the gin: risgeaB 'always travels in the sa the variation in the size of t glass cut in the machine i, means of an adjustable D Specification of Letters Patent.

Patented NOV. 17, 1914.

1913. SeriaLI-Ie. 756,647.

adjusted toward and away from the path of V travel of the carriage, said ing an abutment against which one edge of the glass bears during the cutting or scoring 01 eration. The gage D herein shown consists of a bar or straight edge arranged parallel to the gnide rods 1 and provided with gage D form- V pins that cooperate with recesses 3 in the top surface of the work-table that are located. different distances from the path of travel of the carriage B, but it will, of course, "be

understood that it is immaterial so far as my invention is concerned what particular type of gage the machine is rovided with so long vas it can be adjuste ward and away from the carriage.

In order that the glass may be brokeri evenlyzon the line Where the top surface'of the glass is scored or scratched by the tool C, I have provided the work-table Azwith a movable -member E which the operator moves upwardly or vertically with relation to (he \vorlotablc so'as to exert upward pres-' sure on the glass adjacent the point where it is scored. The work-table: is preferably; provided with longitudinally disposed rollers l on which the glassrests while it is being out or scored, and in the preferred form of my invention, as herein shown, the vertically movable member E- consists of a roller that ext-ends parallel to the rollers l. This roller E is arranged directly underneath the scoring tool C onth'e carriage B,

in a groove 5 in the top surface of the worktable so that when it is actuated by the operate-r it will exert upward pressure on the glass at the exact point where-the glass is scored Any suitable mechanism may be used for moving the .roller upwardly.

.95. The mechanism herein shown for this purpose consists ofa pair of toggle levers 6 pivotally mounted in brackets 7 on the under side of the worlctable and having their inner ends joined to a link 8 which is pivotally connected to a toot-treadle 9, there being sufficient play in the pivotal connections be tween the link 8 and the toggle levers 6 to permit said parts to move with relation to tech other without binding v or bending. The outer ends of the toggle levers 6 are pivotally connected to hearing members 10 that receive trunnions 11 on the ends of the roller E, and said roller is guided vertically by the end plates 2 on the work-table which are provided witl vertically disposed slots 12 through which said trunni ns pass. After the operator has moved the carriage B across ters Batent isi 40 member upwardly so as to exert sufiicient the work-table so as to cause the tool C to score the glass, he actuates the treadle 9 so as to move the roller E upwardly, thereby breaking the glass evenly on the line or scratch that the tool C forms in the top surface of the glass.

With a machine of the construction abovedescribed an unskilled operator can cut sheet glass quickly and accurately owing to the facti that the scoring tool. is mounted in a carriage which always moves in the same path across the work-table. The machine can be adjpsted easily to out sheets of different dimensions by simpl changing the osition of the gage D, and still another esirable feature of such a machine is that a erfectly even break is insured along the 'ne where the top surface of the glass is scored owing to the fact that the work-table is equipped with a vertically movable member under control of the operator that is located directly under the path of travel of the scoring tool. member can be actuated easily by the foot of the operator thus giving the operator the use of both hands to handle the glass on the table, and as the machine comprises only a few parts of simple'design it can be manufacturedat a low cost.

Having thus described my invention, what I claim as new and desire to 1. a sheet glass cutting machine, a worktable on which the glass is positioned pressure on the glass to break it along the line where it is scored.

2. In a sheetglass cutting machine, a work-table on which the glass rests while it is being scored, a rotatable member in the top face of said work-table that supports the glass and facilitates the movement of the sheet of glass over the table said member being arranged in such a position that it will lie directly under the point where the sheet Said vertically movable secure by Letr,

.is scored, and means for moving said mem- 3. In a sheet glass cutting machine, a.

work-table a carriage arranged to travel in a straight path over said table and, provided with a tool for scoring or scratching thetop surfacevof the sheet of glass, a member in said work -table arranged beneath'the path of the scoring tool, and means for moving said member upwardly so as to exert sufficient pressure on the glass to break it along the line where it is scored. a

4. In a sheet "glass cutting machiiie, a work-table, a carriage arranged to travel in a straight path above the work-table and provided with a tool for scoring or scratching the top surface of the glass, a roller arranged in the top surface of said table beneath the path of the scoring tool and means for moving said roller lJlMVjlldlYVliih relation tothe table so as to cause the glass to break along the line where it is scored.

' 5. Ina machine for cutting sheet glass. 21 work-table, a 'carriagearranged td travel in a straight path over said work-jitable and provided with a tool for scoring or scratching the top surface of the glass, a"; plurality of rollers arranged in the top surface-of the table parallel to the path of travel of said carriage ,for facilitating the movementof the glass over the table and preventing the glass from being scratched, one of said rolleaters being arranged in such a position that it 1 liesji beneath the pathof the scoring tool, and

manually operated means under the control ot the operator for moving said last-mentioned roller upwardly with relation to the work-table so asto exert upward pressure on the underside of the glass and this cause it to break along the line where it is scored.

In testimony whereof I hereunto aflix my signature in the presence oftwo W'ltl'lgsSQS, this twenty first day of March,- 1913.

ALLAN P. WHITTEMORET Witnesses: 1

Venus L. Crrrzkcir. Gsozi-cn BAKEWELL. 

